Dear FSL experts, I am trying to run FSLNETS and I have some error (please see below) which I don't know how to solve it. When I run it (11 data set(6GroupA,5groupB), 25 components), it creates the first 6 figures and the problem comes from temporary file name which generates with matlab code in /tmp directory. somehow this file doesn't exist, then I will get fid=-1! " ans = max abs value below diagonal is 4.384943 ans = max abs value above diagonal is 3.060720 Warning: ward's linkage specified with non-Euclidean dissimilarity matrix. > In linkage at 171 In nets_hierarchy at 26 In my_nets at 59 /bin/bash: slices_summary: command not found Error using fread Invalid file identifier. Use fopen to generate a valid file identifier. Error in read_avw_hdr (line 17) testval = fread(fid,1,'int32'); Error in save_avw (line 28) [dims,scales,bpp,endian,datatype]=read_avw_hdr(tmpname); Error in nets_glm (line 16) save_avw(reshape(netmat',XXX,1,1,TTT),fname,'f',[1 1 1 1]); Error in my_nets (line 64) [p_uncorrected,p_corrected]=nets_glm(netmat1,'Design.mat','Design.con',1); % returns matrices of 1-p " /bin/bash: slices_summary: command not found ==> I have already add the fsl5.0. Please let me know if you think of any solution. Best wishes, Maryam